Liquid crystal panel substrate, liquid crystal panel, and electronic device and projection display device using the same

Abstract

In a liquid crystal substrate in which a matrix of reflecting electrodes is formed on a substrate, a transistor is formed corresponding to each reflective electrode and a voltage is applied to the reflective electrode through the transistor. A silicon oxide film having a thickness of 500 to 2,000 angstroms is used as the passivation film and the thickness is set to a value in response to the wavelength of the incident light to maintain a substantially constant reflectance.

1 - 18 . (canceled) 
     
     
         19 . A substrate for a display device, comprising:
 a first switching element that is disposed outside of a pixel region;   a first electrode that is electrically connected to the first switching element;   a second switching element that is disposed outside of the pixel region;   a second electrode that is electrically connected to the second switching element;   a wire that is electrically connected to the first electrode and the second electrode; and   a light shielding film that overlaps the first switching element and the second switching element.   
     
     
         20 . The substrate according to  claim 19 , further comprising:
 a plurality of reflective parts that are formed in the pixel region,   the light shielding film being formed in a layer in which the plurality of reflective parts are formed.   
     
     
         21 . The substrate according to  claim 20 ,
 a material constituting the light shielding film being identical with a material constituting the plurality of reflective parts.   
     
     
         22 . The substrate according to  claim 19 ,
 a material constituting the light shielding film being identical with a material constituting the wire.   
     
     
         23 . The substrate according to  claim 20 ,
 the first switching element being a first transistor,   a gate of the first transistor being formed between the layer and a semiconductor region including a source and a drain of the first transistor.   
     
     
         24 . A display device comprising:
 the substrate of  claim 19 ;   a transparent substrate having a counter electrode and being opposed to the substrate, the transparent substrate being separated from the substrate by a gap; and   a liquid crystal material encapsulated into the gap between the substrate and the transparent substrate.   
     
     
         25 . An electronic device comprising the display device of  claim 24  as a display section. 
     
     
         26 . A projection display device comprising:
 the electronic device of  claim 25 ;   a light source;   the display device modulating the light from the light source; and   a projection lens for projecting the light modulated by the display device.   
     
     
         27 . A substrate for a display device, comprising:
 a first transistor that is disposed outside of a pixel region;   a first electrode that is electrically connected to the first transistor;   a second transistor that is disposed outside of the pixel region;   a second electrode that is electrically connected to the second transistor;   a wire that is electrically connected to the first electrode and the second electrode; and   a light shielding film that overlaps the first transistor and the second transistor.   
     
     
         28 . The substrate according to  claim 27 , further comprising:
 a plurality of reflective parts that are formed in the pixel region,   the light shielding film being formed in a layer in which the plurality of reflective parts are formed.   
     
     
         29 . The substrate according to  claim 28 ,
 a material constituting the light shielding film being identical with a material constituting the plurality of reflective parts.   
     
     
         30 . The substrate according to  claim 27 ,
 a material constituting the light shielding film being identical with a material constituting the wire.   
     
     
         31 . A display device comprising:
 the substrate of  claim 27 ;   a transparent substrate having a counter electrode and being opposed to the substrate, the transparent substrate being separated from the substrate by a gap; and   a liquid crystal material encapsulated into the gap between the substrate and the transparent substrate.   
     
     
         32 . An electronic device comprising the display device of  claim 31  as a display section. 
     
     
         33 . A projection display device comprising:
 the electronic device of  claim 32 ;   a light source;   the display device modulating the light from the light source; and   a projection lens for projecting the light modulated by the display device.   
     
     
         34 . A substrate for a display device, comprising:
 a first switching element and a second switching element that are disposed outside of a pixel region;   a first metal layer that is electrically connected to the first switching element and the second switching element; and   a second metal layer that overlaps the first switching element and the second switching element.   
     
     
         35 . The substrate according to  claim 34 , further comprising:
 a plurality of reflective parts that are formed in the pixel region,   the second metal layer being formed in a layer in which the plurality of reflective parts are formed.   
     
     
         36 . The substrate according to  claim 35 ,
 a material constituting the second metal layer being identical with a material constituting the plurality of reflective parts.   
     
     
         37 . The substrate according to  claim 34 ,
 a material constituting the second metal layer being identical with a material constituting the first metal layer.   
     
     
         38 . The substrate according to  claim 34 ,
 the first switching element being a first transistor,   a gate of the first transistor being formed between the layer and a semiconductor region including a source and a drain of the first transistor.   
     
     
         39 . A display device comprising:
 the substrate of  claim 34 ;   a transparent substrate having a counter electrode and being opposed to the substrate, the transparent substrate being separated from the substrate by a gap; and   a liquid crystal material encapsulated into the gap between the substrate and the transparent substrate.   
     
     
         40 . An electronic device comprising the display device of  claim 39  as a display section. 
     
     
         41 . A projection display device comprising:
 the electronic device of  claim 40 ;   a light source;   the display device modulating the light from the light source; and   a projection lens for projecting the light modulated by the display device.